Walk-in bathtub



FIG. 1 is a perspective view of a walk-in bathtub according to myornamental design,

FIG. 2 is a perspective view of the tub tray thereof,

FIG. 3 is a top plan view of the tub tray,

FIG. 4 is a perspective view of the door thereof,

FIG. 5 is a partly exploded perspective view of the door,

FIG. 6 is an enlarged perspective view of the door locking devicethereof; and,

FIG. 7 is an exploded perspective view of the locking device.

The ornamental design for a walk-in bathtub, as shown and described.